Pitched Roof U Value

This means that the higher the u value the worse the thermal performance of the building envelope.

Pitched roof u value.

A u value is a measure of heat loss in a building element such as a wall floor or roof. U value calculations to en iso 6946 xt pr insulation for pitched roofs. According to the uk building regulations pitched roofs should achieve the u value of 0 18 w m2 depending on the circumstances. U value requirement windows whole window u value 1 4 w m k.

These are expressed as a u value which needs to be achieved. It can also be referred to as an overall heat transfer co efficient and measures how well parts of a building transfer heat. There are a few good u value calculators online that if you are short on time are worth checking out. The tables below show the suggested u values in england wales and scotland.

U value requirement semi glazed doors 1 2 w m k. U value requirement roof 0 13 w m k. An uninsulated roof has a u value of approximately 2 5 w m2k however adding insulation can achieve a value of 0 18 w m2k. U value requirement opaque doors 1 0 w m k.

Warm roof construction is a particularly effective way of insulating complex roofs. If your home was built pre 1967 and has an old attic room or loft conversion a great way of achieving this level of insulation is through our specially designed eco roof.